(LED)
               +----+
               +NumL+
               +----+

+----+----+----+----+
|Tab | /  | *  |Back|
|    |    |    | Spc|
+----+----+----+----+
|7   |8   |9   |-   |
|Home|Up  |PgUp|    |
+----+----+----+----+
|4   |5   |6   |+   |
|Left|    |Righ|    |
+----+----+----+----+
|1   |2   |3   |    |
| End|Down|PgDn|Ent |
+----+----+----|    |
|0   |00  |.   |    |
| Ins|    | Del|    |
+----+----+----+----+